Thematic Bible: When you will receive power

They therefore, having come together, asked him, saying, Lord, art thou at this time about to restore the kingdom to Israel? But he said to them, It belongeth not to you to know times or seasons, which the Father appointed by his own authority. But ye will receive power when the Holy Spirit hath come upon you; and ye will be my witnesses, both in Jerusalem and in all Judaea, and in Samaria, and to the end of the earth.